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Physics Programs & Projects

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Nanomagnetic Imaging
Last Updated Date: 08/20/2012

The microscopic arrangement of the magnetic structure within a thin metal film plays a fundamental role in many technological applications ranging … more

Novel Sources for Focused-ion Beams
Last Updated Date: 08/14/2012

Focused beams of ions have a wide range of uses, from nanoscale imaging to the fabrication of nanomaterials.  At the CNST, researchers are … more

Micro- and Nano-Mechanical Systems
Last Updated Date: 07/25/2012

Micro- and nano-optomechanical systems are being investigated experimentally to bring these systems toward the quantum limit, study quantum … more

Quantum State Manipulation of Ultra-cold Atoms and Superconducting Devices
Last Updated Date: 07/25/2012

Theory is being developed and exploited for the quantum operation of laser-cooled and Bose condensed atoms as well as superconducting devices, such … more

Single Electron Coherence
Last Updated Date: 07/25/2012

CMOS-compatible Si-based SET quantum dots systems are being fabricated and electrically characterized at low temperature to explore the possibility … more

Absolute Ag108 Characterization Based on Gamma-Gamma Coincident Detection by Two Nai (TI) Detectors
Last Updated Date: 06/27/2012

A two-dimensional analysis of three coincident gamma-rays in 108 Ag m decay, detected by two NaI(Tl) scintillation detectors, allows a direct … more

Quantification of the Alpha Wall Effect in Liquid Scintillation Counting
Last Updated Date: 06/27/2012

A long-standing uncertainty in liquid scintillation (LS) counting has been the possible loss of counting efficiency. 

Primary Radioactivity Standardization of Ni-63
Last Updated Date: 06/27/2012

Ni-63 is of considerable interest and importance in radionuclidic metrology as well as for radiation protection surveillance around nuclear … more

Components of Variance in Liquid Scintillation Counting
Last Updated Date: 06/27/2012

As part of the standardization of the 239 Pu solution that was disseminated by NIST as Standard Reference Material (SRM) 4330C, a detailed study … more

Radon Binding to Water-Soluble Cryptophane
Last Updated Date: 06/27/2012

Collaboration on investigating the thermodynamics of radon binding with a new and novel class of cryptophane molecules is currently underway with … more

New Statistical Analysis Tools
Last Updated Date: 06/27/2012

Members of the Radioactivity Group (RG) have been actively collaborating with statisticians in the NIST Statistical Engineering Division to … more

Technetium-99m Primary Standardization and International Comparison
Last Updated Date: 06/27/2012

Technetium-99m ( 99m Tc) is used in two-thirds of all diagnostic nuclear medicine procedures in the United States. more

International Comparison of Pu-241
Last Updated Date: 06/27/2012

All of the plutonium isotopes, which have a very high biotoxicity, are man-made and result from various nuclear activities. Plutonium-241 is a … more

Blind Measurement Comparisons of the USA and UK Pb-210 National Standards
Last Updated Date: 06/27/2012

The National Institute of Standards and Technology (NIST), Radioactivity Group, and the National Physical Laboratory (NPL) of the UK, and the … more

New Standardization of Ra-228
Last Updated Date: 06/27/2012

Measurements of radium isotopes in the naturally-occurring radioactive decay chains (i.e., 235 U, 238 U, and 232 Th) are exceedingly important for … more

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